In addition to listening to your favorite artists on the go, many Sony Walkman 4GB MP3 Players enable you to store more than 900 songs. When you purchase the portable media player, it includes the Media Go software, which you can use to sync music, photos, videos and podcasts to the device. If you can’t locate the disk, you can download the free application on Sony’s official site. Alternatively, you can use Windows Explorer or Windows Media Player to transfer your music. Writer Bio